During the day, less than 1,200 AGL in class G airspace, the flight visibility requirements are ½ statue mile and the cloud clearance requirements are to remain clear of clouds.

At night, less than 1200 AGL in Class G airspace, the helicopter flight visibility requirements are 1 statue mile visibility and cloud clearance requirements are to remain clear of clouds.  However, within ½ mile of the runway or helipad of intended landing, a helicopter may be operated in an airport traffic pattern clear of clouds if the flight visibility is not less than ½ statue mile.

Reference(s):

14 CFR 91.155 Basic VFR weather minimums

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